Please help with a math question? (Fractions)?

Question

the problem is

6/15 = n/20

how would you solve for n using cross multiplication?

please explain the process.

it would be really appreciated.

Answer 1

to solve using cross multiplication take 6 times 20

and 15 times 'n'

this gives you 120=15n

now divide giving you 8

n=8

Answer 2

Multiply 6 by 20 and divide by 15

n=8

Answer 3

well first you just put them lined up, then cross multiply. so you would get 120=15n then divide both sides by 15 so you can leave alone the n.

that would result 8=n

Answer 4

n=8

Answer 5

Multiply 6 by 20.

Then divide the product by 15.

The solution = n.